test/testsupport/trace_to_stderr.cc

/*
 *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#include "webrtc/test/testsupport/trace_to_stderr.h"

#include <cassert>
#include <cstdio>

#include <string>

namespace webrtc {
namespace test {

static const int kLevelFilter = kTraceError | kTraceWarning | kTraceTerseInfo;

TraceToStderr::TraceToStderr() {
  Trace::CreateTrace();
  Trace::SetTraceCallback(this);
  Trace::SetLevelFilter(kLevelFilter);
}

TraceToStderr::~TraceToStderr() {
  Trace::SetTraceCallback(NULL);
  Trace::ReturnTrace();
}

void TraceToStderr::Print(TraceLevel level, const char* msg_array, int length) {
  if (level & kLevelFilter) {
    assert(length > Trace::kBoilerplateLength);
    std::string msg = msg_array;
    std::string msg_time = msg.substr(Trace::kTimestampPosition,
                                      Trace::kTimestampLength);
    std::string msg_log = msg.substr(Trace::kBoilerplateLength);
    fprintf(stderr, "%s %s\n", msg_time.c_str(), msg_log.c_str());
    fflush(stderr);
  }
}

}  // namespace test
}  // namespace webrtc